...another iMac G4, courtesy of Gumtree.

Trek out to the arse end of nowhere AKA Thornton Heath got me another 17" G4. The usual problems - the DVD drive is dead, the PRAM battery needs replacing, etc. - but it's in nice external condition, the screen is fine, and it came with a keyboard for a tenner. I can put up with a lot of aggravation for that sort of price.